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Distortion-free secret image sharing mechanism using modulus operator
Authors:Pei-Yu Lin [Author Vitae]  Jung-San Lee [Author Vitae] [Author Vitae]
Affiliation:a Department of Computer Science and Information Engineering, National Chung Cheng University, 160 San-Hsing, Min-Hsiung, Chiayi 621, Taiwan
b Department of Information Engineering and Computer Science, Feng Chia University, 100 Wenhwa Rd., Seatwen, Taichung 40724, Taiwan
Abstract:The (t, n)-threshold has been extended to secret image sharing due to its practicability. In this article, we provide a novel version that employs the modulus operator to embed the secret share into a host image. The simulator shows that the modulus operator is useful for decreasing shadow image distortion. Using Rabin's signature cryptosystem, participants can detect if a cheater exists in the cooperation. In particular, the new mechanism permits involved members to restore a lossless secret image and to reconstruct a distortion-free host image.
Keywords:Secret sharing  Distortion-free  Rabin's signature  Modulus operator  Cheater detection
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